Now, PickupTrucks.com has posted photos of 2017 GMC Sierra HD test mules with the revised looks, including fully-loaded dually trucks and chassis cabs. This could likely mean that GM’s entire line of full-size trucks will be getting an update for the 2017 model year.

PUTC believes that while the cosmetic changes will be slight, the powertrain updates will be significantly more extensive, and will likely see a Duramax V8 turbo diesel under the hood. Guesses are currently at 450 horsepower and 850 lb-ft of torque. Who knows what transmission it will have, but we believe the Allison name will stay.

Check out the spy shots here, and bring it back in to let us know what you think.

Sponsored Links

Besides bringing you the latest GM News, GM Authority also has a great forum where you can post topics, ask and answer questions as well as discuss all things GM. Visit the GM Authority forum today!

— Sean Szymkowski

Sean is a lead staff writer for GM Authority. The words above are fueled by passion and large amounts of caffeine. Find him on Instagram: @helloimseann

I’m not sure that this would meet with any more success that the first full size truck and SUV hybrids…..

Certainly, the way that they were priced — and then excluded from incentives — killed any momentum and wasted all of GM’s investment. The $5 or $6K premium was hard to swallow based upon economic payback — and then excluding them from incentives made that $10 or $12K and killed them.

GM tends to do this a lot. The diesel Cruze never lived up to expectations of 10% of sales — it was priced against a Golf but the real market would be other Cruze buyers and the premium was too much to get them to move for the most part.

Ditto with the CNG Impala pricing. Maybe a new slogan — Engineered to be the best, priced not to sell?